Annotations in java5

1. Java defines seven built-in annotations.
2. Four are imported from java.lang.annotation: @Retention, @Documented, @Target, and @Inherited.
3. Three, @Override, @Deprecated, and @SuppressWarnings, are included in java.lang.

Seeing them one by one:
@Override
@Deprecated
@SuppressWarnings
@Retention
@Documented
@Target
@Inherited